e: neurotransmitter that increases chance of action potential (change of cell charge (+))
i: neurotransmitter that works to hyperpolarize (-)

reuptake
degradation

r: releasing cell recollects neurotransmitter after it releases synapse
d: breaking up of neurotransmitter by enzymes in synaptic cleft

cocaine

norepinephrine that affects mood(prolong by slowing down reuptake)
blocks pumps from reuptaking DOPAMINE

agonist
antagonist
threshold

1. bind onto receptos and cause for continuous potentials
2. block receptors so neurotransmitters not able to connect on
3. level at which action potential is created (different per cell/receptor site)

spacial summation
temporal summation

spatial: same message received to soma from multiple sources same time
temporal: same message received from 1 soma very quickly

series of psychological/physiological changes to altertness (25 hrs)
pull/push between being asleep and being awake
-work together as CR is reset by sun/light and homeostasis will allow that to happen through proper sleep period

insomnia

dissatisfaction w/ the amount or quality of one's sleep
-usually objective as person can only perceive of staying up all night/not dreaming